MAN Solaris - gdmdynamic (1)



gdmdynamic - GDM GDM Dynamic Server Management



gdmdynamic [-a display | -b display | -d display | -l pattern] [-r display] [-s int] [-t int] [-v int]




gdmdynamic allows the management of displays in a dynamic fashion. It is typically used in environments where it is not possible to list the possible displays in the GDM configuration files. The gdmdynamic command can be used to create a new display on a particular display number, run all newly created displays, or remove a display. The gdmdynamic can also be used to list all attached displays, or only attached displays that match a pattern.

This program is designed to manage multiple simultaneous requests and works to avoid flooding the daemon with requests. If the socket connection is busy, it will sleep and retry a certain number of times that can be tuned with the -s and -t options.


The following options are supported:

-a display Add a new display configuration, leaving it in the DISPLAY_CONFIG state. The display will not actually be started until the display is released by calling gdmdynamic again with the -r option.

-b Background mode. Fork child to do the work and return immediately.

-d display Delete a display, killing the X server and purging the display configuration.

-l pattern List displays via the ATTACHED_SERVERS gdmflexiserver(1), command. Without a pattern, all attached displays are lsited. With a pattern, all attached displays match using glob characters ’*’, ’?’ and ’[]’.

-r display Release (run) the specified display waiting in the DISPLAY_CONFIG state.

-s int If the daemon socket is busy, gdmdynamic will sleep an amount of time between retries. A random number of seconds 0-5 is added to the int value to help ensure that multiple calls to gdmdynamic do not all try to restart at the same time. A value of zero causes the sleep time to be 1 second. Default value is 8 seconds.

-t int If the daemon socket is busy, gdmdynamic will retry to open the connection the specified numer of times. Default value is 15.

-v Verbose mode. Print diagnostic messages about each message sent to GDM.


Example 1: Adding display 2 using the [server-Standard] display configuration defined in the GDM configuration file.

example% gdmdynamic -a "2=Standard"

Example 2: Adding display 3 providing the command to use.

example% gdmdynamic -a "3=/usr/X11R6/bin/X -dev /dev/fb2"

Example 3: Release display 3.

example% gdmdynamic -r 3

Example 4: Deleting display 3.

example% gdmdynamic -d 3

Example 5: List all displays via the ATTACHED_SERVERS command

example% gdmdynamic -l

Example 6: List all displays via the ATTACHED_SERVERS command using a pattern to match

example% gdmdynamic -l "Xorg*"


The following files are used by this application:

/usr/bin/gdmdynamic Executable for GDM Dynamic Server Management


See attributes(5) for descriptions of the following attributes:

Interface stabilityVolatile


Latest version of the GNOME Desktop User Guide for your platform.

gdmXnestchooser(1), gdmflexiserver(1), gdmphotosetup(1), gdmthemetester(1), gdm(1m), gdm-restart(1m), gdmsetup(1m), gnome-std-options(5)


Written by Brian Cameron, Sun Microsystems Inc., 2006.

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SunOS 5.11 gdmdynamic (1) 1 Sep 2004
Generated by Open Solaris Forum from /usr/share/man/man1/gdmdynamic.1 using man macros with tbl support.